return artifactUri;
    }

    public void setArtifactUri(String artifactUri) {
        this.artifactUri = artifactUri;
    }

    public String getWhy() {
        return why;
    }

    public void setWhy(String why) {
        this.why = why;
    }

    public String getError() {
        return error;
    }

    public void setError(String error) {

                    MetadataGraphVertex targetNode = e.getTarget();
                    targetNode.getMd().setArtifactScope(e.getScope());
                    targetNode.getMd().setWhy(e.getSource().getMd().toString());
                    visit(targetNode);
                }
            }
        }
        // -----------------------------------------------------------------------

                    if (entry.equals(v)) { // unless it's an entry point.
                        // currently processing the entry point - it should not have any entry incident edges
                        res.getEntry().getMd().setWhy("This is a graph entry point. No links.");
                    } else {
                        // System.out.println("--->"+v.getMd().toDomainString()

        this.createdTime = value;
    }

    public String getKey() {
        checkSpecifiedProperty("key");
        return convertEmptyToNull(key);
    }

    public void setKey(String value) {
        registerModifiedProperty("key");
        this.key = value;
    }

    public String getValue() {
        checkSpecifiedProperty("value");
        return convertEmptyToNull(value);

    void setLink ( String link );


    /**
     * @return cache key
     */
    String getKey ();


    /**
     * 
     * @param key
     *            cache key
     */
    void setKey ( String key );


    /**
     * @param map
     */
    void setCacheMap ( Map<String, DfsReferralDataInternal> map );


    /**
     * Replaces the entry with key in the cache map with this referral

                (et, vl) -> ((CrawlingInfoParam) et).setCreatedTime(DfTypeUtil.toLong(vl)), "createdTime");
        setupEpg(_epgMap, et -> ((CrawlingInfoParam) et).getKey(), (et, vl) -> ((CrawlingInfoParam) et).setKey(DfTypeUtil.toString(vl)),
                "key");
        setupEpg(_epgMap, et -> ((CrawlingInfoParam) et).getValue(), (et, vl) -> ((CrawlingInfoParam) et).setValue(DfTypeUtil.toString(vl)),
                "value");
    }

    }

    public void setTransformation(final String transformation) {
        this.transformation = transformation;
    }

    public String getKey() {
        return key;
    }

    public void setKey(final String key) {
        this.key = key;
    }

    public String getCharsetName() {
        return charsetName;
    }

    public void setCharsetName(final String charsetName) {